package io;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
/*
单字节文件复制
 */
public class CopyDemo {
    public static void main(String[] args) throws IOException {
        FileInputStream fis = new FileInputStream("mimi.jpg");
        FileOutputStream fos = new FileOutputStream("mao.jpg");
        long start=System.currentTimeMillis();
        int d;
        while ((d=fis.read())!=-1){
            fos.write(d);
        }
        long end=System.currentTimeMillis();
        System.out.println("复制完毕！耗时："+(end-start)+"ms");
           fis.close();
           fos.close();

    }
}
